Compare 11 vs 19

Unique factors11
Total factors11
Prime factorization111191
Prime factorization1119
Divisors count22
Divisors1, 111, 19
Number of properties3618
Additive primes5th 
Centered decagonal primes1st 
Centered triangular primes 1st
Chen primes5th8th
Class 1+ primes5th 
Cousin primes (1st member) 4th
Cousin primes (2nd member)2nd 
Cuban primes 1 2nd
Dihedral primes3rd 
Good primes2nd 
Happy primes 3rd
Long primes 3rd
Lucas primes4th 
Mills primes2nd 
Palindromic primes5th 
Pierpont primes 7th
Pierpont primes of the 2nd kind5th 
Prime quadruplets (1st member)2nd 
Prime quadruplets (3rd member)1st 
Prime quadruplets (4th member) 2nd
Prime quintuplet 1s (2nd member)1st 
Prime quintuplet 1s (5th member) 1st
Prime quintuplet 2s (1st member)2nd 
Prime quintuplet 2s (3rd member)1st 
Prime quintuplet 2s (4th member) 2nd
Prime sextuplets (2nd member)1st 
Prime sextuplets (5th member) 1st
Prime triplets (1st member)3rd 
Prime triplets (2nd member)2nd5th
Prime triplets (3rd member)1st4th
Safe primes3rd 
Sexy primes (1st member)3rd 
Sexy primes (2nd member)1st4th
Sexy prime quadrupletss (1st member)2nd 
Sexy prime quadrupletss (2nd member)1st 
Sexy prime triplets (1st member)3rd 
Sexy prime triplets (2nd member)1st 
Sexy prime triplets (3rd member) 2nd
Solinas primes4th7th
Sophie germain primes4th 
Super primes3rd 
Thabit primes3rd 
Twin primes (1st member)3rd 
Twin primes (2nd member) 4th
Ulam primes3rd 
Wagstaff primes2nd 
Wedderburn-etherington primes3rd 
Roman numberalsXIXIX
Base 210112100112
Base 310232013
Base 42341034
Base 5215345
Base 6156316
Base 7147257
Base 8138238
Base 9129219
Base 1011101910
Base 1110111811
Base 12b121712
Base 13b131613
Base 14b141514
Base 15b151415
Base 16b161316
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